US2708512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite die ring
Assignee: Heintz Manufacturing Co
•
Filing: 1951-09-13
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Granted: 1955-05-17
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Expires: 1971-09-13
Abstract
No abstract record available.
Inventors
- 👤 Charles H Schlecht
- 👤 Joshua P Bowden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:26
CPC Classifications
B; B21; B21D; B21D37/00; B21D37/10; B21K; B21K21/00; B21K21/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-16 | 1958-11-15 | 1959-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-16 | 1962-11-15 | 1963-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-16 | 1966-11-15 | 1967-05-17 | $7700.00 | Window Closed / Lapsed |